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Reinforcement learning (RL) can be formulated as a sequence modeling problem, where models predict future actions based on historical state-action-reward sequences. Current approaches typically require long trajectory sequences to model the…

机器学习 · 计算机科学 2024-12-23 Hemant Kumawat , Saibal Mukhopadhyay

Greedy algorithms are widely used for problems in machine learning such as feature selection and set function optimization. Unfortunately, for large datasets, the running time of even greedy algorithms can be quite high. This is because for…

机器学习 · 统计学 2017-03-09 Rajiv Khanna , Ethan Elenberg , Alexandros G. Dimakis , Sahand Negahban , Joydeep Ghosh

The knowledge discovery algorithms have become ineffective at the abundance of data and the need for fast algorithms or optimizing methods is required. To address this limitation, the objective of this work is to adapt a new method for…

数据库 · 计算机科学 2013-12-18 Thabet Slimani

The scaling of Large Language Model (LLM) services faces significant cost and latency challenges, making effective caching under tight capacity crucial. Existing cache replacement policies, from heuristics to learning-based methods,…

数据库 · 计算机科学 2026-02-26 Yuchong Wu , Zihuan Xu , Wangze Ni , Peng Cheng , Lei Chen , Xuemin Lin , Heng Tao Shen , Kui Ren

Access control is a cornerstone of secure computing, yet large language models often blur role boundaries by producing unrestricted responses. We study role-conditioned refusals, focusing on the LLM's ability to adhere to access control…

计算与语言 · 计算机科学 2025-10-10 Đorđe Klisura , Joseph Khoury , Ashish Kundu , Ram Krishnan , Anthony Rios

Data quality on categorical attribute is a difficult problem that has not received as much attention as numerical counterpart. Our basic idea is to employ association rule for the purpose of data quality measurement. Strong rule generation…

数据库 · 计算机科学 2012-02-16 J. Malar Vizhi , T. Bhuvaneswari

Role-Based Access Control (RBAC) is a popular authorization model used to manage data-access constraints in a wide range of systems. RBAC usually defines the static view on the access rights. However, to ensure dependability of a system, it…

软件工程 · 计算机科学 2018-05-16 Inna Vistbakka , Elena Troubitsyna

This paper explores multi-armed bandit (MAB) strategies in very short horizon scenarios, i.e., when the bandit strategy is only allowed very few interactions with the environment. This is an understudied setting in the MAB literature with…

机器学习 · 计算机科学 2021-02-11 Robert C. Gray , Jichen Zhu , Santiago Ontañón

Basic role based access control [RBAC] provides a mechanism for segregating access privileges based upon a user's hierarchical roles within an organization. This model doesn't scale well when there is tight integration of multiple…

密码学与安全 · 计算机科学 2007-05-23 Jonathan K. Adams , Basheer N. Bristow

The rapid growth of machine learning capabilities and the adoption of data processing methods using vector embeddings sparked a great interest in creating systems for vector data management. While the predominant approach of vector data…

数据库 · 计算机科学 2024-03-26 Viktor Sanca , Anastasia Ailamaki

Artificial bee colony (ABC) algorithm has proved its importance in solving a number of problems including engineering optimization problems. ABC algorithm is one of the most popular and youngest member of the family of population based…

人工智能 · 计算机科学 2014-07-23 Sandeep Kumar , Vivek Kumar Sharma , Rajani Kumari

Despite empirical success, the theory of reinforcement learning (RL) with value function approximation remains fundamentally incomplete. Prior work has identified a variety of pathological behaviours that arise in RL algorithms that combine…

机器学习 · 计算机科学 2020-10-30 Kenny Young , Richard S. Sutton

We present a new task setting for attribute mining on e-commerce products, serving as a practical solution to extract open-world attributes without extensive human intervention. Our supervision comes from a high-quality seed attribute set…

机器学习 · 计算机科学 2023-05-31 Liyan Xu , Chenwei Zhang , Xian Li , Jingbo Shang , Jinho D. Choi

With the growing size of data sets, feature selection becomes increasingly important. Taking interactions of original features into consideration will lead to extremely high dimension, especially when the features are categorical and…

数据库 · 计算机科学 2021-04-13 Qiuqiang Lin , Chuanhou Gao

Manually generating access control policies from an organization's high-level requirement specifications poses significant challenges. It requires laborious efforts to sift through multiple documents containing such specifications and…

密码学与安全 · 计算机科学 2024-09-16 Sakuna Harinda Jayasundara , Nalin Asanka Gamagedara Arachchilage , Giovanni Russello

Association Rule Mining (ARM) is one of the well know and most researched technique of data mining. There are so many ARM algorithms have been designed that their counting is a large number. In this paper we have surveyed the various ARM…

分布式、并行与集群计算 · 计算机科学 2019-08-22 Sudhakar Singh , Pankaj Singh , Rakhi Garg , P. K. Mishra

Relational databases are valuable resources for learning novel and interesting relations and concepts. In order to constraint the search through the large space of candidate definitions, users must tune the algorithm by specifying a…

数据库 · 计算机科学 2020-04-08 Jose Picado , Arash Termehchy , Sudhanshu Pathak , Alan Fern , Praveen Ilango , Yunqiao Cai

Data has become a foundational asset driving innovation across domains such as finance, healthcare, and e-commerce. In these areas, predictive modeling over relational tables is commonly employed, with increasing emphasis on reducing manual…

数据库 · 计算机科学 2025-08-29 Lianpeng Qiao , Ziqi Cao , Kaiyu Feng , Ye Yuan , Guoren Wang

We investigate the impact of search strategies in neural dialogue modeling. We first compare two standard search algorithms, greedy and beam search, as well as our newly proposed iterative beam search which produces a more diverse set of…

计算与语言 · 计算机科学 2019-11-05 Ilia Kulikov , Alexander H. Miller , Kyunghyun Cho , Jason Weston

Optimization tasks over relational data, such as clustering, often suffer from the prohibitive cost of join operations, which are necessary to access the full dataset. While geometric data structures like BBD trees yield fast approximation…

数据库 · 计算机科学 2026-03-13 Aryan Esmailpour , Stavros Sintos